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Finding the Fourth Proportional to 99,755.80, 149,201.70 and 89,301.40

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Solution

The fourth proportional to 99,755.80, 149,201.70 and 89,301.40 is: 133,565.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,755.80 : 149,201.70 = 89,301.40 : x
  2. Step 2: Convert to fraction form
    99,755.80/149,201.70 = 89,301.40/x
  3. Step 3: Cross multiply
    99,755.80x = 149,201.70 × 89,301.40
  4. Step 4: Simplify right side
    99,755.80x = 13,323,920,692.38
  5. Step 5: Solve for x
    x = 13,323,920,692.38/99,755.80
  6. Step 6: Final answer
    x = 133,565.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.